An area of land or seabed underlain by strata yielding petroleum, especially in amounts that justify commercial exploitation.
They are exploring for new oilfields in the North Sea.
The exploration team discovered a promising oilfield rich in reserves.
Oilfield workers face challenging conditions while extracting petroleum.
The country's economy relies heavily on revenue generated from its vast oilfields.
Environmental concerns arise from the potential impact of oilfield operations on ecosystems.
